CVE-2026-27645

MEDIUM

6.1

Description

changedetection.io is a free open source web page change detection tool. In versions prior to 0.54.1, the RSS single-watch endpoint reflects the UUID path parameter directly in the HTTP response body without HTML escaping. Since Flask returns text/html by default for plain string responses, the browser parses and executes injected JavaScript. Version 0.54.1 contains a fix for the issue.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionREQUIRED

Published2/25/2026

Last Modified2/25/2026

Sourcenvd

Honeypot Sightings0

Affected Products

webtechnologies:changedetection

Weaknesses (CWE)

CWE-79

References

https://github.com/dgtlmoon/changedetection.io/commit/a385c89abf44b52fcfa20c7c6a6dd3047c4c1eb5(security-advisories@github.com)

https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-mw8m-398g-h89w(security-advisories@github.com)

https://github.com/dgtlmoon/changedetection.io/security/advisories/GHSA-mw8m-398g-h89w(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.